Meteoric astronomy: A treatise on shooting-stars, fire-balls, and aerolites — D. The First Comet of 1861 and the Meteors of April 20th.

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Meteoric astronomy: A treatise on shooting-stars, fire-balls, and aerolites D. The First Comet of 1861 and the Meteors of April 20th. · ch 44/47

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